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Spatial and vertical distribution of short chain chlorinated paraffins in soils from wastewater irrigated farmlands
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.ORCID iD: 0000-0002-5729-1908
Foreign Economic Cooperation Office, Ministry of Environmental Protection of the People’s Republic of China, Beijing 100035, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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2011 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 45, no 6, 2100-2106 p.Article in journal (Refereed) Published
Abstract [en]

Chlorinated paraffins (CPs) are one of the most complex groups of halogenated contaminants in the environment. However, studies of short chain CPs (SCCPs) in China are very scarce. In this study, the concentrations and distribution of SCCPs in farm soils from a wastewater irrigated area in China were investigated. SCCPs were detected in all topsoil samples, with the sum of the concentrations (ΣSCCPs) in the range of 159.9-1450 ng/g (dry weight, dw). A noticeable spatial trend and specific congener distribution were observed in the wastewater irrigated farmland. Soil vertical profiles showed that ΣSCCP concentrations below the plowed layer decreased exponentially and had a significant positive relationship (R(2) > 0.83) with total organic carbon in soil cores. Furthermore, soil vertical distributions indicated that lower chlorinated (Cl(5-6)) and shorter chain (C(10-12)) congeners are more prone to migrate to deeper soil layers compared to highly chlorinated and longer chain congeners. This work demonstrated that effluents from sewage treatment plants (STPs) could be a significant source of SCCPs to the ambient environment and wastewater irrigation can lead to higher accumulation of SCCPs in farm soils.

Place, publisher, year, edition, pages
2011. Vol. 45, no 6, 2100-2106 p.
Keyword [en]
Agricultural Irrigation, Environmental Monitoring, Hydrocarbons, Chlorinated, Paraffin, Soil, Soil Pollutants, Water Pollutants, Chemical
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-38446DOI: 10.1021/es103740vISI: 000288146200011PubMedID: 21319735Scopus ID: 2-s2.0-79953870502OAI: oai:DiVA.org:oru-38446DiVA: diva2:764987
Note

Sponsors:

National Basic Research Program of China Grant no: 2009CB421605 

National Natural Science Foundation Grant no:s 20897011  20921063  21007078  21077114 

Chinese Academy of Sciences Grant no: KZCX2-YW-QN409 

China Postdoctoral Science Foundation Grant no:s 20090460544  201003166 

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2015-06-05Bibliographically approved

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